US PATENT SUBCLASS 36 / 156
.~.~.~ By screw means

Current as of: June, 1999
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36 /   HD   BOOTS, SHOES, AND LEGGINGS

140  DF  ORTHOPEDIC BOOT OR SHOE WITH CORRECTIVE ELEMENT {4}
145  DF  .~ Arch support {8}
155  DF  .~.~ Adjustable position or shape {5}
156.~.~.~ By screw means {1}
157  DF  .~.~.~.~> With multiple screws

DEFINITION

Classification: 36/156

By screw means:

(under subclass 155) Appliances in which the support is provided with helically threaded means, for varying the height or configuration of the support.